//题目：Press any key to change color, do you want to try it. Please hurry up!
#include<stdio.h>
void main()
{
    int color;
    for(color = 0;color < 8;color++)
    {
        textbackground(color);
        cprintf("This color is %d\n",color);
        cprintf("Press any key to continue\r\n");
        getch();
    }
}